Suggested answer for Exercise 3

As clauses can also realise grammatical functions, they can also receive theta-roles but determining the exact label is not always straightforward, especially with clauses. It is only participants which are obligatory to express the meaning of the predicates (arguments) which receive theta-roles, even if they are unexpressed, i.e. left-implicit; optional elements (adjuncts) which add information e.g. about the place or time or manner of some action or event do not receive theta-roles but that is not surprising, they do not need to be included in the sentence for it to be grammatical.

(1)	a	Peter loves Mary.
			Peter:	Experiencer
			Mary:	Theme
	b	Peter knows Mary well.
			Peter:	Experiencer
			Mary:	Theme
	c	The door opened.
			the door:	Theme/Patient
	d	The purse was stolen.
			the purse:	Theme/Patient
	e	Mary wrote a letter to John the following day.
			Mary:	Agent
			a letter:	Theme
			to John	Goal
	f	John received a letter from Mary.
			John:	Beneficiary
			a letter:	Theme
			from Mary:	Source
	g	Mary cut the cake with a knife.
			Mary:	Agent
			the cake:	Theme/Patient
	i	There arrived some visitors.
			some visitors:	Theme
	j	Mary was cooking dinner when they entered.
			Mary:	Agent
			they:	Agent
	k	Peter has broken his leg.
			Peter:	Experiencer
			his leg:	Theme/Patient
	l	Peter has broken a vase.
			Peter:	Agent
			a vase:	Theme/Patient
	m	It surprised everyone that the visitors arrived.
			everyone:	Experiencer
			that the visitors arrived:	Propositional
			the visitors:	Theme
	n	They wondered what to do.
			they:	Experiencer
			what to do:	Propositional
	o	Mary is beautiful.
			Mary:	Theme
	p	John is in Paris.
			John:	Theme
			in Paris:	Location
	q	That the purse was stolen shocked everyone.
			that the purse was stolen:	Propositional
			everyone:	Experiencer
			the purse:	Theme/Patient

Basic English Syntax with Exercises

Suggested answer for Exercise 3